Reaction Stoichiometry

1
Reaction Stoichiometry
2
STOICHIOMETRY EQUATIONS

• Stoichiometry the study of quantitative
  relationships that exist in chemical formulas and
  reactions.
• In this unit you will interpret and perform
  stoichiometric calculations in balanced chemical
  equations.

3
Sample Problems

• Moles to Moles
• Mass to Mass
• Mass to Volume
• Volume to Volume

4
Using the Mole Highway

• Balance the equation.
• Identify the known (where are you?) and unknown
  (where are you going?).
• Convert the known units to moles (if required).
• Multiply by the mole ratio.
• coefficient of unknown / coefficient of known
• Convert the moles of unknown to the desired units.

5
Limiting Reactants

• The reactant that limits the amount of product
  formed in a chemical reaction is called the
  limiting reactant.
• The quantities of products formed in a reaction
  are always determined by the quantity of the
  limiting reactant.

6
Percent Yield

• The amount of a product that should be produced
  based on calculations is called the expected
  yield.
• The amount of a product that is really obtained
  from a chemical reaction is called the actual
  yield.
• Percent Yield actual yield X 100
  expected yield